Share and Learn: php

Monday, 7 April 2014

Reading XML file - PHP

The easiest and simplest way to read XML file is using SimpleXML.

We'll consider a simple XML file test.xml with the following nodes and values.

<root>

<node1>Hello</node1>

<node2>World</node2>

<node3>This is simple Example of Parsing XML files </node3>

<root>

Loading a XML file

$xml=simplexml_load_file("filename");

Parsing a Node value

$node=$xml->node_name;

Example to demonstrate the usage of simpleXML

<?php
$xml=simplexml_load_file("test.xml");
echo $xml ->node3;
echo ' ';
foreach($xml->children() as $child) // children() get all the child nodes in the XML file.
{
 echo 'Node_name: '.$child ->getName().' '; // displays the node_name.
 echo 'Node_value: '.$child.' '; // displays the node value.
}
?>

Output will be displayed as follows

This is a simple example of parsing XML files
Node_name: node1 Node_value: Hello
Node_name: node2 Node_value: World
Node_name: node3 Node_value: This is a simple example of parsing XML files

Nodes having nested nodes can be parsed using the above method by using foreach loop.

for more Details refer

Sunday, 6 April 2014

Including multiple PHP files.

Use of Including files.

Including multiple PHP files helps Maintainability
Huge blocks of code can be split into small useful blocks which can be included wherever necessary.
Re-usability of code.

How To

Using Require.

Produces a fatal-error (E_COMPILE_ERROR) and stops the script if the Code fails to load the Script file.

Using Include.

Produces a warning (E_WARNING) and Resumes the script upon failure.

Based on Requirements choose whether to use Require or Include.

Syntax :

<?php include 'script_name.php ' ?>

<?php require 'script_name.php' ?>

Example

echo " Hello World " ;

echo "This Message is Displayed by the Included file test.php " ;

<?php

echo "This is Displayed from main.php ";

include "test.php";

Output

This is Displayed from main.php
Hello World
This message is Displayed from Test.php

For more Information refer